13218101613 has 32 divisors (see below), whose sum is σ = 20746523520. Its totient is φ = 8288812800.

The previous prime is 13218101581. The next prime is 13218101641. The reversal of 13218101613 is 31610181231.

13218101613 is a `hidden beast` number, since 1 + 32 + 1 + 8 + 10 + 1 + 613 = 666.

It is not a de Polignac number, because 13218101613 - 2⁵ = 13218101581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13218101653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867763 + ... + 882863.

It is an arithmetic number, because the mean of its divisors is an integer number (648328860).

Almost surely, 2^13218101613 is an apocalyptic number.

It is an amenable number.

13218101613 is a deficient number, since it is larger than the sum of its proper divisors (7528421907).

13218101613 is a wasteful number, since it uses less digits than its factorization.

13218101613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17034 (or 17028 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 13218101613 its reverse (31610181231), we get a palindrome (44828282844).

The spelling of 13218101613 in words is "thirteen billion, two hundred eighteen million, one hundred one thousand, six hundred thirteen".